Tim Lincecum was hardly recognizable to San Francisco Giants fans last season because of his performance on the mound. And he will be even harder to recognize this spring after cutting off his trademark long hair.

Photos of the new-look Lincecum began circulating online in the past month or so, but they are becoming more popular as spring training nears. Lincecum and his staff mates will report to camp Wednesday.

The World Series champion Giants have few questions heading into the spring, but Lincecum is among their chief concerns. In 33 starts last season, he went 10-15 with a 5.18 ERA and the only success he experienced in the postseason came as a reliever. That was a far cry from the dominant starter who won the NL Cy Young Award in 2008 and 2009 and who posted a 2.74 ERA in 2011.

"Last year was tough to swallow," Lincecum told the San Francisco Chronicle. "When you're used to things going well and all of a sudden they're not going well, you start questioning yourself and doubting yourself. You start feeding off negatives and that turns into a spiral."

His hair isn’t the only physical change, either. According to CSNBayArea.com, Lincecum also has added eight pounds to his frame in hopes of improving his stamina and velocity.